42253634 has 8 divisors (see below), whose sum is σ = 63415440. Its totient is φ = 21115156.

The previous prime is 42253633. The next prime is 42253669. The reversal of 42253634 is 43635224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42253597 and 42253606.

It is not an unprimeable number, because it can be changed into a prime (42253633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224 + ... + 9195.

It is an arithmetic number, because the mean of its divisors is an integer number (7926930).

Almost surely, 2^42253634 is an apocalyptic number.

42253634 is a deficient number, since it is larger than the sum of its proper divisors (21161806).

42253634 is a wasteful number, since it uses less digits than its factorization.

42253634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664.

The product of its digits is 17280, while the sum is 29.

The square root of 42253634 is about 6500.2795324509. The cubic root of 42253634 is about 348.3009738234.

Adding to 42253634 its reverse (43635224), we get a palindrome (85888858).

The spelling of 42253634 in words is "forty-two million, two hundred fifty-three thousand, six hundred thirty-four".